GB2386444B - Digital correlators - Google Patents

Digital correlators

Info

Publication number
GB2386444B
GB2386444B GB0205823A GB0205823A GB2386444B GB 2386444 B GB2386444 B GB 2386444B GB 0205823 A GB0205823 A GB 0205823A GB 0205823 A GB0205823 A GB 0205823A GB 2386444 B GB2386444 B GB 2386444B
Authority
GB
United Kingdom
Prior art keywords
digital correlators
correlators
digital
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB0205823A
Other versions
GB2386444A (en
GB0205823D0 (en
Inventor
Jonathan David Lewis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Europe Ltd
Original Assignee
Toshiba Research Europe Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Research Europe Ltd filed Critical Toshiba Research Europe Ltd
Priority to GB0205823A priority Critical patent/GB2386444B/en
Publication of GB0205823D0 publication Critical patent/GB0205823D0/en
Priority to US10/384,574 priority patent/US7532663B2/en
Priority to JP2003575526A priority patent/JP4025295B2/en
Priority to CNA038002477A priority patent/CN1509523A/en
Priority to PCT/JP2003/002937 priority patent/WO2003077441A1/en
Publication of GB2386444A publication Critical patent/GB2386444A/en
Application granted granted Critical
Publication of GB2386444B publication Critical patent/GB2386444B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/15—Correlation function computation including computation of convolution operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/709—Correlator structure
    • H04B1/7095—Sliding correlator type
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0254—Matched filters
GB0205823A 2002-03-12 2002-03-12 Digital correlators Expired - Fee Related GB2386444B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB0205823A GB2386444B (en) 2002-03-12 2002-03-12 Digital correlators
US10/384,574 US7532663B2 (en) 2002-03-12 2003-03-11 Digital correlators
JP2003575526A JP4025295B2 (en) 2002-03-12 2003-03-12 Digital correlator
CNA038002477A CN1509523A (en) 2002-03-12 2003-03-12 Digita Correlator (JP)
PCT/JP2003/002937 WO2003077441A1 (en) 2002-03-12 2003-03-12 Digital correlators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0205823A GB2386444B (en) 2002-03-12 2002-03-12 Digital correlators

Publications (3)

Publication Number Publication Date
GB0205823D0 GB0205823D0 (en) 2002-04-24
GB2386444A GB2386444A (en) 2003-09-17
GB2386444B true GB2386444B (en) 2004-05-26

Family

ID=9932821

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0205823A Expired - Fee Related GB2386444B (en) 2002-03-12 2002-03-12 Digital correlators

Country Status (5)

Country Link
US (1) US7532663B2 (en)
JP (1) JP4025295B2 (en)
CN (1) CN1509523A (en)
GB (1) GB2386444B (en)
WO (1) WO2003077441A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE484890T1 (en) * 2002-08-21 2010-10-15 Nxp Bv DELAY LINE FOR RECEIVING MULTIPLE PROPAGATION PATHS
TW200727605A (en) * 2002-09-12 2007-07-16 Interdigital Tech Corp Mitigation of interference in cell search by wireless transmit and receive units
US7684472B2 (en) * 2003-07-02 2010-03-23 Thomson Licensing Method and apparatus for frequency-robust detection of a wideband code division multiple access secondary synchronization channel
JP4318569B2 (en) * 2004-01-28 2009-08-26 三洋電機株式会社 Correlator and receiver using the same
EP1836777A1 (en) * 2005-01-14 2007-09-26 THOMSON Licensing Cell search using rake searcher to perform scrambling code determination
EP1836776A1 (en) * 2005-01-14 2007-09-26 Thomson Licensing Ram-based scrambling code generator for cdma
WO2006080904A1 (en) * 2005-01-14 2006-08-03 Thomson Licensing Method and system for sub-chip resolution for secondary cell search
US7903722B2 (en) * 2005-01-14 2011-03-08 Thomson Licensing Hardware-efficient searcher architecture for code division multiple access (CDMA) cellular receivers
WO2006078231A1 (en) * 2005-01-14 2006-07-27 Thomson Licensing Efficient maximal ratio combiner for cdma systems
US7606295B2 (en) * 2005-02-24 2009-10-20 Interdigital Technology Corporation Generalized rake receiver for wireless communication
US8855222B2 (en) * 2008-10-07 2014-10-07 Qualcomm Incorporated Codes and preambles for single carrier and OFDM transmissions
US8908792B2 (en) * 2009-06-23 2014-12-09 Intel Corporation Apparatus and methods using an efficient Golay correlator running at 1.5 the sampling rate in wireless communication systems
US8548005B2 (en) * 2011-04-19 2013-10-01 Mediatek Singapore Pte. Ltd. Technique for switching between 1x and 2x oversampling rate in a TD-SCDMA receiver
US9628263B2 (en) 2014-10-02 2017-04-18 Pacific MicroCHIP Corp. Signal digitizer and cross-correlation application specific integrated circuit

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909784A (en) * 1973-07-02 1975-09-30 Bell & Howell Co Information coding with error tolerant code
US5465405A (en) * 1992-07-30 1995-11-07 Raytheon Company Apparatus and method for detecting signals
US5339077A (en) * 1992-08-18 1994-08-16 Idaho Research Foundation, Inc. Comma code generator
US5574733A (en) * 1995-07-25 1996-11-12 Intel Corporation Scan-based built-in self test (BIST) with automatic reseeding of pattern generator
KR100206128B1 (en) * 1996-10-21 1999-07-01 윤종용 Built-in self test circuit
US6061818A (en) * 1997-05-08 2000-05-09 The Board Of Trustees Of The Leland Stanford Junior University Altering bit sequences to contain predetermined patterns
US6310856B1 (en) * 1998-08-07 2001-10-30 Motorola, Inc. CDMA communications system having a searcher receiver and method therefor
US6687376B1 (en) * 1998-12-29 2004-02-03 Texas Instruments Incorporated High-speed long code generation with arbitrary delay
US6567482B1 (en) * 1999-03-05 2003-05-20 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for efficient synchronization in spread spectrum communications
US6763099B1 (en) * 1999-11-05 2004-07-13 T-Netix, Inc. Advanced three way call detection system and method using spread spectrum techniques
US6353842B1 (en) * 1999-11-23 2002-03-05 Janusz Rajski Method for synthesizing linear finite state machines
US6684358B1 (en) * 1999-11-23 2004-01-27 Janusz Rajski Decompressor/PRPG for applying pseudo-random and deterministic test patterns
US6763363B1 (en) * 1999-12-02 2004-07-13 Honeywell International Inc. Computer efficient linear feedback shift register
US6577678B2 (en) * 2001-05-08 2003-06-10 Quicksilver Technology Method and system for reconfigurable channel coding
US6950974B1 (en) * 2001-09-07 2005-09-27 Synopsys Inc. Efficient compression and application of deterministic patterns in a logic BIST architecture

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Proceedings of the International Symposium on Low Power Electronics and Design, D. Garrett and M. Stan, "Power reduction techniques for a spread spectrum based correlator", pp. 225-230, especially section 3.1, retrieved from http://csis.ee.virginia.edu/research/lib/ISLPED97_paper.ps . *
TSG-RAN WG1 meeting à4, April 1999 (Yokohama, Japan), Texas Instruments, "Reduced complexity primary and secondary synchronisation codes with good aperiodic correlation properties for the WCDMA system" , pp. 1-14, especially page 3 and figure 3, available at http://www.3gpp.org. *

Also Published As

Publication number Publication date
JP4025295B2 (en) 2007-12-19
GB2386444A (en) 2003-09-17
GB0205823D0 (en) 2002-04-24
US7532663B2 (en) 2009-05-12
CN1509523A (en) 2004-06-30
WO2003077441A1 (en) 2003-09-18
JP2005519563A (en) 2005-06-30
US20030231705A1 (en) 2003-12-18

Similar Documents

Publication Publication Date Title
AU2003249738A8 (en) Ostoscope
AU2003297193A8 (en) Meta-web
AU2003252028A8 (en) Heterodiamondoids
AU2003279495A8 (en) Alert-modeling
GB2386444B (en) Digital correlators
DE50303619D1 (en) Reibschweissvorrichtung
GB0212891D0 (en) Jewllery case
GB0225750D0 (en) Wiffs away
AU2002367810A8 (en) Bis-transition-metal-chelate-probes
AU2003264900A8 (en) Cast-cutter
DE50304964D1 (en) Handhobelmaschine
AU2003262681A8 (en) Hemo-aide
DE10392833D2 (en) Geotextilie
AU2002341221A8 (en) Honey-brandy
AU2003253735A8 (en) Vacuolins
EP1574454A4 (en) Case
EP1564156A4 (en) Case
HU0200206V0 (en) Digital columbaria
GB0204402D0 (en) Digital synotophore
AU2329P (en) Gaula Gaura lindheimeri
AU2341P (en) Speedee xTriticosecale
AU2569P (en) Sunminpa Hesperozygis myrtoides
AU2328P (en) Archley Arctotis fastuosa
AU2327P (en) Archnah Arctotis fastuosa
CA94955S (en) Handleset

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170312